Java.util.Scanner.close() 方法

package com.codingdict;

import java.util.*;

public class ScannerDemo {
   public static void main(String[] args) {

      String s = "Hello World! 3 + 3.0 = 6";

      // create a new scanner with the specified String Object
      Scanner scanner = new Scanner(s);

      // print the next line of the string
      System.out.println("" + scanner.nextLine());

      // close the scanner
      System.out.println("Closing Scanner...");
      scanner.close();
      System.out.println("Scanner Closed.");
   }
}